Hello,

Going through previous year paper helps us a lot in knowing the exam pattern, important topics, and other such important details, especially in case of UPSC the syllabus is vast, and previous year paper helps a lot here, you can access previous year paper for UPSC Mains 2019 at https://www.upsc.gov.in/examinations/Civil%20Services%20%28Main%29%20Examination%2C%202019